Shiremog, I have attached a photo of a temporary fix I did on my own car.
Since doing it, I no longer notice the hole behind the steering wheel.
I cut out the shape in a rubber garage door seal and tacked it to the cowl with bostik glue. Does the job. I will do a more permanent fix in the winter.
Last weekend at Gaydon, one one car with the similar cowl, the owner had edged cowl with rubber u tube. I however feel that the hole needs to be filled in.

Attached Images
IMG_1020.JPG (679.96 KB, 94 downloads)
IMG_1021.JPG (688.3 KB, 66 downloads)

Ian
2011 Plus 4
Wild Mogs Reims 2019, Goodwood 2018, Isle of Man 2017, Carried on to Caramulo" 2016